Gas-sampling device



" Jan. 2, 1923. E A CL K AR GAS SAMPLING DEVICE.

FILED FEB, 18. 1921.

' 3mm EAMar 3% w yggmm Patented Jan. 2, 1323.

is .4 it learns) GAS-SAMPLING DEVICE.

Application filed February 18, 1921.

To all who met may concern:

Be it known that I, EARLE A. CLARK, a citizen of the United States,residing at Tulsa, in the county of Tulsa and State of Oklahoma, haveinvented certain new and useful Improvements in Gas-Sampling Devices;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it apperta'ins to make and use the same.

This invention relates to improvements in gas samplers, its object beingto secure a sample of gas from a pipe line or other container in whichthe gas is under a pressure less than that of the atmosphere, or inother words, to secure a sample of gas where the line or container isunder a vacuum.

l/Vith the above mentioned object and other objects in view, which willappear as the description proceeds, the invention con sists in the novelfeatures hereinafter described in detail, illustrated in theaccompanying drawing and more particularly pointed out in the appendedclaims.

Referring to the drawing Fig. 1 is a perspective view of the deviceshowing the receptacles, valves, connections and stand.

Fig. 2 is a cross sectional view of one of the receptacles.

l igs. 3, 4iand 5 are diagrammatic views showing the operation of thedevice, which will be clearly understood from the follow ingdescription.

In the drawings 1., 2, 3 and 4- represent receptacles into two of whichthe gas sample is to be drawn. 5 is a valve cutting off the connectionbetween the line 13, and the receptacles. 6 and 3 are valves on thereceptacles and 7 is a valve between the two receptacles 2 and 3. 9 is aunion or connection which enables the operator to detach receptacles 3and 4: from receptacles 1 and 2 after the sample is secured. 10 and 10are valves or stop cocks at the bottoms of the receptacles 1 and 4,which control the flow of a liquid such as mercury through the flexibletubes 11 connecting the receptacles, and 12 is the stand upon which thereceptacles are supported.

Serial No. 446,159.

To operate the device, the receptacles 1, 2, 3 and 4 are placed on thestand 12, 2 and 3 being filled with liquid, preferably mercury. Thereceptacle 2 is connected at the top through the medium of the valve 5,to gas line 13, which, as has been stated, is under a vacuum, and thevalves 6, 7 and 8 and cocks 10 and 10 are closed.

The valve 6 and cock 10 are opened and, as shown in Fig. 3, receptacle 1is lowered, thereby permitting the liquid, such as mer cury, in thereceptacle 2 to flow by gravity into the receptacle 1, which causes asuction of gas from the pipe line 13 into the receptacle 2. The valve 6is then closed and valve '7 and cook 10 are opened and as shown in Fig.4, receptacle 1 is again raised and receptacle 4t lowered when themercury in receptacle 1 flowing back into receptacle 2, will push thesample of gas into receptacle 3, at the same 111116 forcing the mercuryfrom the latter into receptacle 4%.

Valve 7 is then closed and 6 is opened again and a further supply of gasobtained in the same manner. This procedure is continued untilreceptacle 3 contains a desired sample of gas at whatever pressure theoperator wishes to use for his experiments. The greater number of timesreceptacle 2 is filled and forced into receptacle 3, the greater thepressure of the gas in receptacle 3 will be. The pressure in 3 may alsobe increased by rai ing receptacle at when the valve 7 is closed, thusforcing the mercury back into receptacle 3 and compressing the as shownin Fig. 5.

As soon as the desired sample has been collected, the stop cock 10 isclosed and the receptacles 3 and a may be separated from receptacles 1and 2 through the medium of the union 9 and the receptacle containingthe sample removed to the laboratory for analysis, or for whateverexperiments are to be performed. The valve 8 on receptacle 3 is simplyfor use in the laboratory, when the sample is to be taken from thereceptacle. I

While I have described my invention as being particularly adapted fortaking samples of gas from a pipe line or other containcr. in which toeis under a pressure loss than that oi the atmosphere, it is obvious thatmy improved gas sampler may be used to obtain samples of gas from a pipeline or other container where the gas is held under a pressure, greaterthan that of the atmosphere.

What I claim and desire to secure by Letters Patent is 1. A gas samplingdevice.comprisingvtwo pairs of receptacles, flexible connections betweeneach of said pairs, a connection between the two pairs, two of vsaidreceptacles containing liquid, and means for creating a suction, in it/Q: ofNsa-id receptacles by. permitting the liquid to flow. into theother two.

- VA device as claimed in claim; 1 ,in which the two pairs ofreceptacles are detachably connected.

3. A device as claimed in claim 1 in which the liquid in the tworeceptacles includes mercury.

t. A device as claimed in claim 1, in which the liquid is caused'to flowfrom the receptaclescontaining same by gravity.

5. A device as claimed in claim 1 including-means for finally forcingthe gas into one ofthe receptacles and compressing the same.

In testimony whereof I aflix signature.

EARLEQA. CLARK.

